Mark V Mockup

Photo Gallery of a Mark V Mockup, The Mark V was a British heavy tank project from the First World War.

After having made plans for the continued development of the Mark I into the Mark IV, the Tank Supply Committee (the institute planning and controlling British tank production) in December 1916 ordered the design of two new types: the Mark V and the Mark VI. The Mark V should embody the most advanced features that could still be incorporated into the Mark I hull. The Mark VI should abandon the old hull entirely, reflecting only some general principles of the older tank.

Source: Wikipedia